Design Concepts of PLC Alarm Systems: From Fault Codes to On-Site Prompts
Common On-Site Embarrassments The equipment is down, and the screen displays “ERR-047”. The operator looks at the code in confusion and picks up the phone: “The equipment is down, reporting 047.” Engineer: “Where?” “I don’t know.” “Go to station 3 and check the proximity switch.” The operator walks over: “It’s on.” “What’s the pressure gauge … Read more